Pompeii Genomes: Reassigning Victim Identities

For nearly two centuries, the plaster casts of Pompeii victims have served as poignant snapshots of a tragedy frozen in time. Visitors and historians alike have looked at groups of figures huddled together in their final moments and constructed heartbreaking narratives about families perishing in each other’s arms. However, new research published in November 2024 has dismantled many of these long-held assumptions. A landmark study combining ancient DNA (aDNA) analysis with skeletal examinations has revealed that many of these “family” groups were not genetically related at all.

The Myth of the "House of the Golden Bracelet"

One of the most famous and emotionally resonant tableaus in Pompeii was found in the House of the Golden Bracelet. For decades, museum placards and guidebooks described this group as the ultimate tragedy of a nuclear family. The scene consists of four individuals: two adults and two children.

One adult was wearing an intricate gold bracelet and had a child sitting on their hip. Naturally, early archaeologists interpreted this as a mother holding her child, accompanied by the father and another sibling. It fit the Victorian narrative of domestic tragedy perfectly.

The 2024 study, published in the journal Current Biology, proves this interpretation was incorrect. Genetic analysis conducted by researchers at the Max Planck Institute for Evolutionary Anthropology and the University of Florence revealed the following:

• Gender: The adult wearing the bracelet was an adult male, not a female.
• Kinship: None of the four individuals in this group were biologically related to one another.
• Conclusion: The narrative of the mother and father dying with their children was a fabrication based on modern assumptions about jewelry and childcare.

This revelation forces historians to reconsider the social dynamics of the final moments of Pompeii. These four individuals may have been servants, neighbors, or strangers who simply sought shelter in the same corridor as the pyroclastic flow descended.

The Embracing Pair in the House of the Cryptoporticus

Another specific example highlighted in the study involves two figures found in the House of the Cryptoporticus. These two individuals were found in an embrace, leading early restorers and observers to label them as sisters, a mother and daughter, or perhaps lovers.

The DNA evidence extracted from the skeletal remains encased within the plaster casts contradicts the “sisters” or “mother-daughter” theory. At least one of the embracing figures was genetically male. furthermore, the mitochondrial DNA shows they did not share a maternal line. While they could still be half-brothers or lovers, the scientific data strips away the traditional “tragic female relatives” narrative that was projected onto them during the excavation.

Diverse Ancestry in the Roman Empire

Beyond debunking family relationships, the genomic data provided a fascinating look into who actually lived in Pompeii in 79 AD. The Roman Empire is often depicted in popular media with a somewhat homogenous European population, but the genetics tell a different story of migration and slavery.

The study analyzed the genomes of five individuals and found that their genetic profiles were distinct from the italic populations of the Iron Age. Instead, their DNA showed strong affinities with populations from the Eastern Mediterranean.

• Origins: The victims had genetic markers consistent with people from the Levant (modern-day Lebanon, Israel, Syria) and Anatolia (modern-day Turkey).
• Cosmopolitanism: This confirms that Pompeii was a cosmopolitan hub. The high level of genetic diversity suggests the presence of many immigrants and enslaved people from the eastern provinces of the Roman Empire.

This aligns with historical records of the time, which indicate that Rome and its satellite cities were melting pots of culture and genetics, largely driven by trade routes and the forced movement of enslaved populations.

How the Science Works: Extracting DNA from Plaster

You might wonder how scientists retrieve DNA from plaster statues. The process is complex and relies on the unique preservation method used at Pompeii.

In the 1860s, archaeologist Giuseppe Fiorelli developed the technique of pouring liquid plaster into the voids left by decomposed bodies in the hardened volcanic ash. This captured the shape of the body, clothing, and facial expressions. However, the actual bones of the victims remain inside these plaster casts.

To get the data, the research team, led by Alissa Mittnik and David Caramelli, had to carefully extract skeletal material from the casts without destroying the artistic value of the figures. They focused on the petrous bone—a dense part of the skull that preserves DNA better than other bones—and tooth fragments.

The team faced significant challenges. The intense heat of the volcanic eruption often destroys DNA, leaving only fragmented genetic codes. However, recent advancements in genomic sequencing allow scientists to piece together these fragments to determine sex and ancestry with high accuracy.

The Bias of Early Archaeology

A major takeaway from this study is the realization of how much historical interpretation is colored by the biases of the people telling the story. When these casts were first created and restored in the late 19th and early 20th centuries, archaeologists often manipulated the poses to increase the dramatic effect.

The study notes that some casts were positioned or modified to fit a specific narrative before being put on display. If a figure had a bracelet, they were labeled female. If figures were touching, they were labeled family. These narratives were not based on biological evidence but on what the excavators felt the public would find most compelling.

We now know that in the chaos of the eruption of Mount Vesuvius, traditional social structures likely collapsed. People did not necessarily die in family units. They died with whoever was nearby, huddled together in basements and corridors with servants, friends, or strangers, united only by the terrifying reality of the ash cloud.

Frequently Asked Questions

How do scientists know the gender if the bodies are decomposed? While soft tissue decomposes, DNA remains trapped in the dense parts of the bone, such as the inner ear or teeth. By sequencing this DNA, scientists can look for X and Y chromosomes to determine biological sex definitively, regardless of what the figure is wearing.

Does this mean none of the groups were families? No. This study sampled a specific set of famous casts to test the prevailing narratives. There are likely many genuine family groups among the thousands of victims. However, this research proves we cannot assume a group is a family based solely on their proximity or pose.

Why did early archaeologists lie about the families? It wasn’t necessarily a malicious lie. Archaeologists in the 1800s lacked DNA technology. They made “best guesses” based on jewelry, clothing, and Victorian social norms. They also understood that tragic stories of families drew more interest and funding for their excavations.

What happened to the DNA samples after the study? The extraction process uses very small amounts of bone powder. The physical casts remain intact and on display. The data derived from the DNA is stored in scientific databases for future researchers to analyze as technology improves even further.